Comment 59 for bug 1034999

Caolán McNamara committed a patch related to this issue.
It has been pushed to "master":

https://git.libreoffice.org/core/commit/8e5c1982c41c234027245fe2da6bf9bc3f5fe238

tdf#108560 horribly slow to paste many lines into editeng with a11y active

It will be available in 7.5.0.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.